
.nav {
    overflow: hidden;
}
.sk {
    position: absolute;
    left: 190px;
    top: 40px;
    width: 76px;
    height: 34px;
    border-left: 1px solid #b21a1c;
    background: url(../images/sk.png) no-repeat 10px 4px;
}

.nav .sk-list ul li {
    float: left;
}
.sk-list  li a {
    display: block;
    font-size: 16px;
    font-weight: 700;
    padding: 0 20px;
    line-height: 47px;
    color: #000;
}

.sk-con ul li {
    float: left;
}
.sk-con ul li a {
    float: left;
    line-height: 50px;
    font-size: 14px;
    padding: 0 15px;
}
.sk-con ul li:last-child a::after {
    content: "\e91e";
    font-family: "icomoon";
}

.sk-bd ul li {
    float: left;
    width: 290px;
    height: 460px;
    border: 1px solid transparent;
    margin-right: 12px;
    overflow: hidden;
}
.sk-bd ul li:nth-child(4n) {
    margin-right: 0;
}
.sk-bd ul li:hover {
    border: 1px solid  #b21a1c;
}